Blank for making perforated tubing.



M. E. LAYNE.

BLANK FOR MAKING PERFORATED TUBING,

APPLIOATION FILED JUNEB, 1908' 1,053,614. Patented Feb. 18,1913.

' BBBBBBBBBBBB T 1.

M. E. LAYNE.

BLANK FOR MAKING PERPORATBD TUBING.

APPLICATION FILED JUNE8,190B.

1,053,614. Patented Feb.18, 1913.

.i SHEETS-SHEET 2.

Q t? 9 9 A O z Q w r A C V I" r\ r; r J x v A 7 A c Q 3 h I WITNESSgS I INVENTOR zifofl am; of? M. fi I UNITED STATES MAHLON E. LAYNE,

OF emmer, TEXAS- BLANK FOR MAKING PERFORATED TUBING.

Specification of Letters Patent.

Patented Feb. 18,1913.-

Applicatioufiled June 8, 1908. Serial No. 437,438.

To all whom it may concern:

Be it. known that I, Mnunox E. Larnn, a citizen of the United States, residing at Houston, in the county of Harris and State of Texas, have invented certain new and useful Im )roi'ements in Blanks for Making lert'oratec Tubing, of which the following is al specification.

The invention relates particularly to the manufacture of the perforated well tubing eniplhyed as the fran'iework for screens as used in water and oil wells. It is further designed to improve the quality of the tubing. The steps en'iployed and the blanks used are illustrated in the accompanying drawing. wherein Figure l is a section through a pair of rolls in which a sheet of metal is being'eorrugated,

Figure a is a section through the sheet after it has been punched,

l igure 3 a section through the sheet after it has been draw welded into a tube.

Figures l, 5 and 6 are views similar to those of Figures 1, 2 and 3, wherein a ditlerout form of corrugation is illustrated,

Figure 7 is a front elevation of a still difterent form of rolls employed,

Figure 8 is a section on the line VIII-- VIII of Figure 7,

Figure I) is a plan view of two skelps, one of which has been punched, and the other of which is unpunched,

Figures 10 and 11 are sectional views respectively on the lines XX"and XIXI of Figure 9,

Figure 12 is a transverse section througli p another form of rolls and skelp in process 0 formation,

- Figure 13 is a plan view of a portion of a sheet treated in the rolls of Figure 12, and

Figure 14 is a section on the line XIV XIV of Figure 13.

In producing the tubing shown in Figure 3, the skelp is first passed through the rolls 1 and 2 forming thereon the ribs 3. The sheet after emerging from the rolls, is punched or drilledas indicated in Figure 2, the perforations 4 being plaeed in series between the ribs 3. Afteri being punched,the sheet is draw welded into the tube indicated in cross section in Figure 3. The corrugated tube as illustrated in Figure 3, is much stifi'er than a plain tube having the same amount of metal, and as the tube is thinner between the 34 openings 4 may be punched ex;

drilled with, greater ease than is the case where a plain tube of greaterthick-ness is employed.

The process illustrated in Fi ares 4,

(3 is substantially that just described for; l igures 1, 2 and 3, the only difference bein' that the corrugations are produced on bet 1 sides of the skelp 5, and the action of the rolls is large] y a )ending action. The skelp 6 of Figures 9 and 10 is formed in the rolls oi Figure 7, such rolls being provided with the projections 7 for producing the recesses 8 in the face of the skelp. It will be ap arcut that the series of recesses or s ort grooves 8 form a pluralit of interrupted grooves extending longitu inally along the skelp. After the sheet is rolled to the form shown in the right hand portion of Figure 9, the ends of the recesses 8 are either punched or drilled forming the perforations t) (Figure 11). The sheet thus perforated is subsequently draw welded into a tube construction corresponding to that of Figures-3 and 6. It will be noted that the steps in the production of this particular form oftube are the same as those of the method previously described, the distinction being that instead of continuous grooves extendmg from formed, interrupted grooves consisting of the recesses 8 are formed.

The sheet shown in'Figures l3 and 14 is quite similar to that of Fi ires 9,10 and 11, the principal distinction eing in the character of the.openings 10 which correspond to the openin s 9 in the sheet of Figure 9.

Figure 12. These rolls are provided with In forming t is'sheet the skelp is pagsed "through the rolls 11 and 12 as indicator "in the opposing shear-in" teeth 13 and 14, which serve to bend down t e metal in the manner illustrated, and shear it at the end of the recesses to form the openings 10. B this desire to secure by Letters Patent is the following: I

1. A blank for use in the formation of perforated tubular screens, comprising a sheet metal skelp provided in its face with a raided with a series of communi ations be- 5 nd so one end of the sheet to the other being 11 plurality of longitudinal grooves and pro-.

means one of the ste s illustrated 1n the illustrated its use, what I claim as new and' Q z i i 4 J a tween the grooves and the other side of the skelp substantially as described. j 2. A blank for use in the iormationbt perforated tubular screens, comprising a 'skelp ployided in ite face'with a plurality of 1 longitudinal interrupted grooves and with a eminnumcatlon from each section of each groove to the other side of the skelp.

3L A blank for use in the formation of tubular screens, comprising a skelp provided in its face with a pluralit of longitudlnal interrupted grooves ezreh portion whereof 

